<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Interface to the classic MySQL extension
 *
 * @version $Id: mysql.dbi.lib.php 11335 2008-06-21 14:01:54Z lem9 $
 */
if (! defined('PHPMYADMIN')) {
	exit;
}

/**
 *
 */
// MySQL client API
if (!defined('PMA_MYSQL_CLIENT_API')) {
	if (function_exists('mysql_get_client_info')) {
		$client_api = explode('.', mysql_get_client_info());
		define('PMA_MYSQL_CLIENT_API', (int)sprintf('%d%02d%02d', $client_api[0], $client_api[1], intval($client_api[2])));
		unset($client_api);
	} else {
		define('PMA_MYSQL_CLIENT_API', 32332); // always expect the worst...
	}
}

function PMA_DBI_real_connect($server, $user, $password, $client_flags) {
	global $cfg;

	if (empty($client_flags)) {
		if ($cfg['PersistentConnections']) {
			$link = @mysql_pconnect($server, $user, $password);
		} else {
			$link = @mysql_connect($server, $user, $password);
		}
	} else {
		if ($cfg['PersistentConnections']) {
			$link = @mysql_pconnect($server, $user, $password, $client_flags);
		} else {
			$link = @mysql_connect($server, $user, $password, FALSE, $client_flags);
		}
	}

	return $link;
}

function PMA_DBI_connect($user, $password, $is_controluser = FALSE) {
	global $cfg, $php_errormsg;

	$server_port   = (empty($cfg['Server']['port']))
				   ? ''
				   : ':' . $cfg['Server']['port'];

	if (strtolower($cfg['Server']['connect_type']) == 'tcp') {
		$cfg['Server']['socket'] = '';
	}

	$server_socket = (empty($cfg['Server']['socket']))
				   ? ''
				   : ':' . $cfg['Server']['socket'];

	$client_flags = 0;

	if (PMA_PHP_INT_VERSION >= 40300 && PMA_MYSQL_CLIENT_API >= 32349) {
		// always use CLIENT_LOCAL_FILES as defined in mysql_com.h
		// for the case where the client library was not compiled
		// with --enable-local-infile
		$client_flags |= 128;
	}

	/* Optionally compress connection */
	if (defined('MYSQL_CLIENT_COMPRESS') && $cfg['Server']['compress']) {
		$client_flags |= MYSQL_CLIENT_COMPRESS;
	}

	/* Optionally enable SSL */
	if (defined('MYSQL_CLIENT_SSL') && $cfg['Server']['ssl']) {
		$client_flags |= MYSQL_CLIENT_SSL;
	}

	$link = PMA_DBI_real_connect($cfg['Server']['host'] . $server_port . $server_socket, $user, $password, empty($client_flags) ? NULL : $client_flags);

	// Retry with empty password if we're allowed to
	if (empty($link) && $cfg['Server']['nopassword'] && !$is_controluser) {
		$link = PMA_DBI_real_connect($cfg['Server']['host'] . $server_port . $server_socket, $user, '', empty($client_flags) ? NULL : $client_flags);
	}

	if (empty($link)) {
		if ($is_controluser) {
			if (! defined('PMA_DBI_CONNECT_FAILED_CONTROLUSER')) {
				define('PMA_DBI_CONNECT_FAILED_CONTROLUSER', true);
			}
			return false;
		}
		PMA_auth_fails();
	} // end if

	PMA_DBI_postConnect($link, $is_controluser);

	return $link;
}

function PMA_DBI_select_db($dbname, $link = null) {
	if (empty($link)) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return FALSE;
		}
	}
	if (PMA_MYSQL_INT_VERSION < 40100) {
		$dbname = PMA_convert_charset($dbname);
	}
	return mysql_select_db($dbname, $link);
}

function PMA_DBI_try_query($query, $link = null, $options = 0) {
	if (empty($link)) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return FALSE;
		}
	}
	if (defined('PMA_MYSQL_INT_VERSION') && PMA_MYSQL_INT_VERSION < 40100) {
		$query = PMA_convert_charset($query);
	}
	if ($options == ($options | PMA_DBI_QUERY_STORE)) {
		return @mysql_query($query, $link);
	} elseif ($options == ($options | PMA_DBI_QUERY_UNBUFFERED)) {
		return @mysql_unbuffered_query($query, $link);
	} else {
		return @mysql_query($query, $link);
	}
}

// The following function is meant for internal use only.
// Do not call it from outside this library!
function PMA_mysql_fetch_array($result, $type = FALSE) {
	global $cfg, $allow_recoding, $charset, $convcharset;

	if ($type != FALSE) {
		$data = mysql_fetch_array($result, $type);
	} else {
		$data = mysql_fetch_array($result);
	}

	/* No data returned => do not touch it */
	if (! $data) {
		return $data;
	}

	if (!defined('PMA_MYSQL_INT_VERSION') || PMA_MYSQL_INT_VERSION >= 40100
		|| !(isset($cfg['AllowAnywhereRecoding']) && $cfg['AllowAnywhereRecoding'] && $allow_recoding)) {
		/* No recoding -> return data as we got them */
		return $data;
	} else {
		$ret = array();
		$num = mysql_num_fields($result);
		$i = 0;
		for ($i = 0; $i < $num; $i++) {
			$name = mysql_field_name($result, $i);
			$flags = mysql_field_flags($result, $i);
			/* Field is BINARY (either marked manually, or it is BLOB) => do not convert it */
			if (stristr($flags, 'BINARY')) {
				if (isset($data[$i])) {
					$ret[$i] = $data[$i];
				}
				if (isset($data[$name])) {
					$ret[PMA_convert_display_charset($name)] = $data[$name];
				}
			} else {
				if (isset($data[$i])) {
					$ret[$i] = PMA_convert_display_charset($data[$i]);
				}
				if (isset($data[$name])) {
					$ret[PMA_convert_display_charset($name)] = PMA_convert_display_charset($data[$name]);
				}
			}
		}
		return $ret;
	}
}

function PMA_DBI_fetch_array($result) {
	return PMA_mysql_fetch_array($result);
}

function PMA_DBI_fetch_assoc($result) {
	return PMA_mysql_fetch_array($result, MYSQL_ASSOC);
}

function PMA_DBI_fetch_row($result) {
	return PMA_mysql_fetch_array($result, MYSQL_NUM);
}

/**
 * Frees the memory associated with the results
 *
 * @param result	$result,...	 one or more mysql result resources
 */
function PMA_DBI_free_result() {
	foreach (func_get_args() as $result) {
		if (is_resource($result)
		 && get_resource_type($result) === 'mysql result') {
			mysql_free_result($result);
		}
	}
}

/**
 * Returns a string representing the type of connection used
 * @uses	mysql_get_host_info()
 * @uses	$GLOBALS['userlink']	as default for $link
 * @param   resource		$link   mysql link
 * @return  string		  type of connection used
 */
function PMA_DBI_get_host_info($link = null)
{
	if (null === $link) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return false;
		}
	}
	return mysql_get_host_info($link);
}

/**
 * Returns the version of the MySQL protocol used
 * @uses	mysql_get_proto_info()
 * @uses	$GLOBALS['userlink']	as default for $link
 * @param   resource		$link   mysql link
 * @return  integer		 version of the MySQL protocol used
 */
function PMA_DBI_get_proto_info($link = null)
{
	if (null === $link) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return false;
		}
	}
	return mysql_get_proto_info($link);
}

/**
 * returns a string that represents the client library version
 * @uses	mysql_get_client_info()
 * @return  string		  MySQL client library version
 */
function PMA_DBI_get_client_info() {
	return mysql_get_client_info();
}

/**
 * returns last error message or false if no errors occured
 *
 * @uses	PMA_MYSQL_INT_VERSION
 * @uses	PMA_convert_display_charset()
 * @uses	PMA_DBI_convert_message()
 * @uses	$GLOBALS['errno']
 * @uses	$GLOBALS['userlink']
 * @uses	$GLOBALS['strServerNotResponding']
 * @uses	$GLOBALS['strSocketProblem']
 * @uses	mysql_errno()
 * @uses	mysql_error()
 * @uses	defined()
 * @param   resource		$link   mysql link
 * @return  string|boolean  $error or false
 */
function PMA_DBI_getError($link = null)
{
	$GLOBALS['errno'] = 0;
	if (null === $link && isset($GLOBALS['userlink'])) {
		$link =& $GLOBALS['userlink'];

// Do not stop now. On the initial connection, we don't have a $link,
// we don't have a $GLOBALS['userlink'], but we can catch the error code
//	} else {
//			return FALSE;
	}

	if (null !== $link) {
		$error_number = mysql_errno($link);
		$error_message = mysql_error($link);
	} else {
		$error_number = mysql_errno();
		$error_message = mysql_error();
	}
	if (0 == $error_number) {
		return false;
	}

	// keep the error number for further check after the call to PMA_DBI_getError()
	$GLOBALS['errno'] = $error_number;

	if (! empty($error_message)) {
		$error_message = PMA_DBI_convert_message($error_message);
	}

	// Some errors messages cannot be obtained by mysql_error()
	if ($error_number == 2002) {
		$error = '#' . ((string) $error_number) . ' - ' . $GLOBALS['strServerNotResponding'] . ' ' . $GLOBALS['strSocketProblem'];
	} elseif ($error_number == 2003) {
		$error = '#' . ((string) $error_number) . ' - ' . $GLOBALS['strServerNotResponding'];
	} elseif (defined('PMA_MYSQL_INT_VERSION') && PMA_MYSQL_INT_VERSION >= 40100) {
		$error = '#' . ((string) $error_number) . ' - ' . $error_message;
	} else {
		$error = '#' . ((string) $error_number) . ' - ' . PMA_convert_display_charset($error_message);
	}
	return $error;
}

function PMA_DBI_close($link = null)
{
	if (empty($link)) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return FALSE;
		}
	}
	return @mysql_close($link);
}

function PMA_DBI_num_rows($result) {
	if (!is_bool($result)) {
		return mysql_num_rows($result);
	} else {
		return 0;
	}
}

function PMA_DBI_insert_id($link = null)
{
	if (empty($link)) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return FALSE;
		}
	}
	//$insert_id = mysql_insert_id($link);
	// if the primary key is BIGINT we get an incorrect result
	// (sometimes negative, sometimes positive)
	// and in the present function we don't know if the PK is BIGINT
	// so better play safe and use LAST_INSERT_ID()
	//
	// by the way, no problem with mysqli_insert_id()
	return PMA_DBI_fetch_value('SELECT LAST_INSERT_ID();', 0, 0, $link);
}

function PMA_DBI_affected_rows($link = null)
{
	if (empty($link)) {
		if (isset($GLOBALS['userlink'])) {
			$link = $GLOBALS['userlink'];
		} else {
			return FALSE;
		}
	}
	return mysql_affected_rows($link);
}

/**
 * @todo add missing keys like in from mysqli_query (orgname, orgtable, flags, decimals)
 */
function PMA_DBI_get_fields_meta($result) {
	$fields	   = array();
	$num_fields   = mysql_num_fields($result);
	for ($i = 0; $i < $num_fields; $i++) {
		$fields[] = PMA_convert_display_charset(mysql_fetch_field($result, $i));
	}
	return $fields;
}

function PMA_DBI_num_fields($result) {
	return mysql_num_fields($result);
}

function PMA_DBI_field_len($result, $i) {
	return mysql_field_len($result, $i);
}

function PMA_DBI_field_name($result, $i) {
	return mysql_field_name($result, $i);
}

function PMA_DBI_field_flags($result, $i) {
	return PMA_convert_display_charset(mysql_field_flags($result, $i));
}

?>
